feat: Complete Pi coding agent integration

cmd/entire/cli/agent/pi/hooks.go

@@ -0,0 +1,211 @@
+package pi
+
+import (
+	"encoding/json"
+	"fmt"
+	"os"
+	"path/filepath"
+
+	"github.com/entireio/cli/cmd/entire/cli/agent"
+	"github.com/entireio/cli/cmd/entire/cli/paths"
+)
+
+// Ensure PiAgent implements HookSupport and HookHandler
+var (
+	_ agent.HookSupport = (*PiAgent)(nil)
+	_ agent.HookHandler = (*PiAgent)(nil)
+)
+
+// Pi hook names - these become subcommands under `entire hooks pi`
+const (
+	HookNameSessionStart     = "session-start"
+	HookNameSessionEnd       = "session-end"
+	HookNameStop             = "stop"
+	HookNameUserPromptSubmit = "user-prompt-submit"
+)
+
+// PiSettingsFileName is the settings file used by pi.
+const PiSettingsFileName = "settings.json"
+
+// entireExtensionPackage is the npm package for the pi-entire extension.
+const entireExtensionPackage = "npm:@hjanuschka/pi-entire"
+
+// GetHookNames returns the hook verbs Pi supports.
+// These become subcommands: entire hooks pi <verb>
+func (p *PiAgent) GetHookNames() []string {
+	return []string{
+		HookNameSessionStart,
+		HookNameSessionEnd,
+		HookNameStop,
+		HookNameUserPromptSubmit,
+	}
+}
+
+// InstallHooks installs pi-entire extension in .pi/settings.json.
+// Pi uses extensions rather than external hooks, so we add the extension package.
+// Returns the number of changes made.
+func (p *PiAgent) InstallHooks(localDev bool, force bool) (int, error) {
+	repoRoot, err := paths.RepoRoot()
+	if err != nil {
+		repoRoot, err = os.Getwd()
+		if err != nil {
+			return 0, fmt.Errorf("failed to get current directory: %w", err)
+		}
+	}
+
+	settingsPath := filepath.Join(repoRoot, ".pi", PiSettingsFileName)
+
+	// Read existing settings if they exist
+	// Use map[string]json.RawMessage to preserve unknown fields
+	var rawSettings map[string]json.RawMessage
+	var packages []string
+
+	existingData, readErr := os.ReadFile(settingsPath) //nolint:gosec
+	if readErr == nil {
+		if err := json.Unmarshal(existingData, &rawSettings); err != nil {
+			return 0, fmt.Errorf("failed to parse existing settings.json: %w", err)
+		}
+		// Extract packages array if it exists
+		if packagesRaw, ok := rawSettings["packages"]; ok {
+			if err := json.Unmarshal(packagesRaw, &packages); err != nil {
+				return 0, fmt.Errorf("failed to parse packages in settings.json: %w", err)
+			}
+		}
+	} else {
+		rawSettings = make(map[string]json.RawMessage)
+	}
+
+	// Check if extension is already installed
+	for _, pkg := range packages {
+		if pkg == entireExtensionPackage {
+			return 0, nil // Already installed
+		}
+	}
+
+	// Add the extension package
+	packages = append(packages, entireExtensionPackage)
+
+	// Update the packages field in rawSettings
+	packagesJSON, err := json.Marshal(packages)
+	if err != nil {
+		return 0, fmt.Errorf("failed to marshal packages: %w", err)
+	}
+	rawSettings["packages"] = packagesJSON
+
+	// Create directory if needed
+	if err := os.MkdirAll(filepath.Dir(settingsPath), 0o750); err != nil {
+		return 0, fmt.Errorf("failed to create .pi directory: %w", err)
+	}
+
+	// Write settings
+	output, err := json.MarshalIndent(rawSettings, "", "  ")
+	if err != nil {
+		return 0, fmt.Errorf("failed to marshal settings: %w", err)
+	}
+
+	if err := os.WriteFile(settingsPath, output, 0o644); err != nil {
+		return 0, fmt.Errorf("failed to write settings.json: %w", err)
+	}
+
+	return 1, nil
+}
+
+// UninstallHooks removes pi-entire extension from settings.
+func (p *PiAgent) UninstallHooks() error {
+	repoRoot, err := paths.RepoRoot()
+	if err != nil {
+		repoRoot = "."
+	}
+
+	settingsPath := filepath.Join(repoRoot, ".pi", PiSettingsFileName)
+	data, err := os.ReadFile(settingsPath) //nolint:gosec
+	if err != nil {
+		return nil // No settings file means nothing to uninstall
+	}
+
+	// Use map[string]json.RawMessage to preserve unknown fields
+	var rawSettings map[string]json.RawMessage
+	if err := json.Unmarshal(data, &rawSettings); err != nil {
+		return fmt.Errorf("failed to parse settings.json: %w", err)
+	}
+
+	// Extract and modify packages array
+	var packages []string
+	if packagesRaw, ok := rawSettings["packages"]; ok {
+		if err := json.Unmarshal(packagesRaw, &packages); err != nil {
+			return fmt.Errorf("failed to parse packages in settings.json: %w", err)
+		}
+	}
+
+	// Remove the extension package
+	newPackages := make([]string, 0, len(packages))
+	for _, pkg := range packages {
+		if pkg != entireExtensionPackage {
+			newPackages = append(newPackages, pkg)
+		}
+	}
+
+	// Update the packages field in rawSettings
+	packagesJSON, err := json.Marshal(newPackages)
+	if err != nil {
+		return fmt.Errorf("failed to marshal packages: %w", err)
+	}
+	rawSettings["packages"] = packagesJSON
+
+	// Write back
+	output, err := json.MarshalIndent(rawSettings, "", "  ")
+	if err != nil {
+		return fmt.Errorf("failed to marshal settings: %w", err)
+	}
+
+	if err := os.WriteFile(settingsPath, output, 0o644); err != nil {
+		return fmt.Errorf("failed to write settings.json: %w", err)
+	}
+
+	return nil
+}
+
+// AreHooksInstalled checks if pi-entire extension is installed.
+func (p *PiAgent) AreHooksInstalled() bool {
+	repoRoot, err := paths.RepoRoot()
+	if err != nil {
+		repoRoot = "."
+	}
+
+	settingsPath := filepath.Join(repoRoot, ".pi", PiSettingsFileName)
+	data, err := os.ReadFile(settingsPath) //nolint:gosec
+	if err != nil {
+		return false
+	}
+
+	// Use map[string]json.RawMessage for consistency
+	var rawSettings map[string]json.RawMessage
+	if err := json.Unmarshal(data, &rawSettings); err != nil {
+		return false
+	}
+
+	var packages []string
+	if packagesRaw, ok := rawSettings["packages"]; ok {
+		if err := json.Unmarshal(packagesRaw, &packages); err != nil {
+			return false
+		}
+	}
+
+	for _, pkg := range packages {
+		if pkg == entireExtensionPackage {
+			return true
+		}
+	}
+
+	return false
+}
+
+// GetSupportedHooks returns the hook types Pi supports.
+func (p *PiAgent) GetSupportedHooks() []agent.HookType {
+	return []agent.HookType{
+		agent.HookSessionStart,
+		agent.HookSessionEnd,
+		agent.HookUserPromptSubmit,
+		agent.HookStop,
+	}
+}